IIT JEE Practice Question and Answer
8Q: There is a clock which shows false timing ie it shows 20 minutes less for each 1 hour. If the clock shows 12 noon now how many minutes will be lost when it shows 2 pm ? 1922 05b5cc728e4d2b4197774f71e
5b5cc728e4d2b4197774f71e- 136 minutesfalse
- 248 minutesfalse
- 335 minutesfalse
- 460 minutestrue
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Answer : 4. "60 minutes"
Explanation :
Answer: D) 60 minutes Explanation: For 1 hour, 20 minutes is slower, then for 06 miuntes - 2 minutes is slower30 minutes - 10 minutesActual time | false time 12 12 01 PM 12:40 PM (20 minutes slower) 02 PM 01:20 PM 03 PM 02:00 PM So, when actual time is 3pm, the false time is 2 pm.So, it loses 60 minutes when it shows 2 pm.
Q: By investing Rs. 1620 in 8% stock, Michael earns Rs. 135. The stock is then quoted at ? 1922 05b5cc723e4d2b4197774f686
5b5cc723e4d2b4197774f686- 1Rs. 145false
- 2Rs. 245.1false
- 3Rs. 96true
- 4Rs. 75false
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Answer : 3. "Rs. 96"
Explanation :
Answer: C) Rs. 96 Explanation: Michel earns Rs. 135 by investing Rs. 1620To earn Rs. 8 how much he have to invest...? = (8 x 1620)/135 = Rs. 96
Q: The Magna Carta established the rights of 1921 05b5cc60ae4d2b4197774b57c
5b5cc60ae4d2b4197774b57c- Show AnswerHide Answer
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Answer :
Explanation :
The Magna Carta has long been cited as the original source for such documents as the United States Constitution. It was a document that presented ideas that were progressive beyond its time, one that still bears relevance today. The Magna Carta primarily established the rights of 13th-century English citizens. It granted protection from unlawful imprisonment and swift justice, which established the idea that everybody, including the king, was subject to the letter of the law.
Q: "Tigris River" flows through which of the following countries ? 1921 05b5cc6c5e4d2b4197774dd78
5b5cc6c5e4d2b4197774dd78- 1Irantrue
- 2Italyfalse
- 3Iraqfalse
- 4Egyptfalse
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Answer : 1. "Iran"
Explanation :
Answer: A) Iran Explanation:
Q: Which gas is known as "Fuel of Future" ? 1921 05b5cc6c3e4d2b4197774dc45
5b5cc6c3e4d2b4197774dc45- 1Methanefalse
- 2Oxygenfalse
- 3Neonfalse
- 4Hydrogentrue
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Answer : 4. "Hydrogen"
Explanation :
Answer: D) Hydrogen Explanation: Because of its being pollution free and combustion efficient, Hydrogen gas is called fuel of future. Because of its origin in marshy places, Methane is called as 'Marsh Gas'.
Q: Basophils increase in number when parasitic invasion occurs. 1921 05b5cc690e4d2b4197774c43d
5b5cc690e4d2b4197774c43d- 1TRUEfalse
- 2FALSEtrue
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Answer : 2. "FALSE"
Explanation :
Answer: B) FALSE Explanation: FALSE. Basophils number will not be increased when parasitic invasion occurs. Basophils are a type of white blood cell. Although they're produced in the bone marrow, they're found in many tissues throughout your body. They're part of your immune system and play a role in its proper function. Basophils appear in many specific kinds of inflammatory reactions, particularly those that cause allergic symptoms. If your basophil level is low, it may be due to a severe allergic reaction. Basophils contain anticoagulant heparin, which prevents blood from clotting too quickly. They also contain the vasodilator histamine, which promotes blood flow to tissues.
Q: 12 boys decided to constribute Rs. 750 each to an Orphange. Suddenly few of them boys dropped out and consequently the rest had to pay Rs. 150 more. Then the number of boys who dropped out? 1921 05b5cc6b4e4d2b4197774d4a0
5b5cc6b4e4d2b4197774d4a0- 14false
- 26false
- 32true
- 43false
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Answer : 3. "2"
Explanation :
Answer: C) 2 Explanation: Total money decided to contribute = 750 x 12 = 9000 Let 'b' boys dropped The rest paid 150/- more => (12 - b) x 900 = 9000 => b = 2 Hence, the number of boys who dropped out is 2.
Q: The average of the ages of Sushanth, Krish and Rishi is 43 years and the average of the ages of Sushanth, Rishi and Rohit is 49 years. If Rohit is 54 years old, what is Krish's age ? 1921 05b5cc73de4d2b4197774f948
5b5cc73de4d2b4197774f948- 134 yearsfalse
- 226 yearsfalse
- 324 yearsfalse
- 436 yearstrue
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Answer : 4. "36 years"
Explanation :
Answer: D) 36 years Explanation: Let present ages of Sushanth = w, Krish = x, Rishi = y and Rohit = z , thenw + x + y = 43 x 3 = 129 ---(i) andw + y + z = 49 x 3 = 147 ---(ii)Subtracting (i) from (ii), (w+y+z) - (w+x+y) = 147 - 129 , z - x = 18 ---(iii)Given Rohit's age=z=54, so from (iii), x = 54 - 18 = 36.Therefore, Krish age is 36 years.

